sparkling silver Someone has to be the guinea pig even after years of trials. This time Covid19 will not have had time to do long trials - hence the elderly and vulnerable go first
DH, 77, overweight and with high blood pressure and Type 2 diabetes, currently in remisssion^ is part of the Oxford COVID trial. He is one of at least 20,000 and possibly more people of all ages and states of health in several different countries who have volunteered to be part of the current COVID test programme and the vaccine developers are already looking for volunteers for the challenge phase of the development when fit healthy people will be vaccinated againsts COVID and will then be infected by COVID. They will be in kept hospital when this stage happens. If it is successful they will, no doubt extend the tests.
Yes of course there is always a risk when any new medical drug or procedure goes into general use, but if this hadn't been done, smallpox, polio and measles would still be rampant killing thousands of people every year.
Whatever happens you will be more likely to die of COVID without the vaccine than suffer ill effects from the vaccine itself. I, for one, having done the maths, will be fighting to be at the top of the queue for the vaccine.